Benjamin f



I (NoModeL) B. F. CARTER.

VPIGKER STAFF CHECK FOR LOOMS. No. 384,508. Patented June 12, 1888.

IWIEHIIIIINIIIIIIIIII llllllllll JHL E y 4'.

ME? v W 0 UNITED STATES PATENT FFrc.

PlC'KER-STAFF CHECK FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 384,508, dated June 12,1888.

Application filed September 22, 1887. Serial N 0. 250,436. (No model.)

To all whom it may concern.-

Be it known that I, BENJAMIN F. CARTER, a citizen of the United States,residing at WVoonsocket, in the county of Providence and State of RhodeIsland,have invented certain new and useful Improvements in Picker StaffChecks for Looms; and I do declare the following to be a full, clear,and exact description of the in vention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters orfigures of reference marked thereon, which form a part of thisspecification.

Figure l of the drawings shows the lay of a loom with the inventionapplied, the pickerstaff being shown in elevation. Fig. 2 is a similarview. Fig. 3 is a detail view of the check. Fig. 4 is a detail side viewthereof.

My invention relates to picker-staff checks for looms; and it consistsin the construction and novel combination ofparts, as will be here:inafter fully described, and pointed out in the claim.

The present device is an improvement over the picker-staff check forwhich Letters Patent were granted to me under date of September 28,1886, No. 349,979.

The object of my invention is to provide a picker-staff check of simpleconstruction, having a spring less rigid than in the formerpatcut, andhaving no pivots or working parts that require oil.

Referring by letter to the accompanying drawings, A designates thelay-beam of a loom, and B is a guide slot located at one end thereof,and within which the pickerstafi' 0 works.

D shows a metal plate secured to the under side of the lay-beam andconforming somewhat to the outer end of the slot B. The longer arm ofthe plate D is provided at the end with a semicircular bearing, d,clasping the portion of the spring E that surrounds a pivot orscrewjournal, a. The opposite or shorter arm of the plate D is securedto the 1ay-beam on the opposite side of the slot by means of the screwa, passing through the transverse slot d. By means of the transverseslot d and the setscrew a the plate D may be slightly adjusted byswinging it upon the pivotal screw d, to

lessen or increase the tension or hearing of the spring E upon thepicker-staff.

E represents a flat metal spring, one end of which surrounds and isloosely fitted on the pivot or screw a. The oppositeend rests normallyagainst the inner surface of the short arm of the plate D, as shown ate.

0 indicates the picker-staff, which maybe of any well-knownconstruction, and is shown in two positions, Figs. 1 and 2.

The spring E, being set on an angle to the stick or staff and across theslot, prevents the staff from rebounding or reacting on the shut tle,and it is well known that any rebounding or reaction prevents a uniformthrow of the shuttle, and also has a tendency to break the cops and tostack the filling. A positive throw is given to the shuttle, and allheating from friction is avoided.

The device being of simple construction, there are no parts or joints towear out or to requireattention.

Having described my improvements, what I claim, and desire to secure byLetters Patent, 1s

In combination with the lay of a loom, the plate D, having thesemicircular bearing (1, clasping the spring E, and having the short armprovided with the transverse slot (1, the screw a, passing through saidslot, the pivot a, and the spring having one end fitted on the pivot to,substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN F. CARTER.

Witnesses:

SAML. P. COOK, GEO. W. SPAULDING.

